Sheet-metal pipe.



' UNITD- ffSTTES ,fraile-12.."

.ENT

sassy-METAL Para.

sPEcIFIcaTIoNforming panoramas Patent No. 710,262, dated september- 80,1902.,

i l. Application and me cicoz. serai No. 110,470. 4N@ moda.)

vTo @ZZ whomiz'rmay con/ecrit: i e

VBe it known that I, FRANK LFILSON', a citir/zen of the United States, and ajresideptiof Point Pleasant, in the county of Mason and 5 State of West Virginia, have invented a new and Improved Sheet-Metal Pipe, of which the tionl This invention relates to improvements in ro and the object is to provide a simple means for securing the edges together and. also for securing thelengths orjoints together, sothatl accidentalr separation of one joint from anx5 e iswhat is termed as nested pipe, because 1. for convenience in transportation the edges ot: the sections or joints are to be left open, so "thatseveral joints may be placed one within zoanother. I will describe a sheet-metal pipe embodying my invention and then pointent the nove features inthe appended claims.

Reference is to be had to the accompanying a 5 drawings, forming a part of this specification,

in which similar characters of reference indid Patentv cate corresponding parts in all the figures.

Figure l is a perspective view of 'a length or joint of pipe embodying my invention with 3o the edges separated as in nesting. Fig. 2.

shows a joint of the pipe with the edgesinterlocked. Fig. 3 shows several joints as s ecured ltogether. Fig. 4 is a section ,on the line 4 4 of Fig.`3, and Fig. 5 is a detail showing v.-3,5 the'fastening-wires as secured together to 4 connect one joint with another.

` y The sheet-metal pipe 5 has a double fold at one edge-that is, this edge is folded inward,

as indicated at 6, and then-outward, as at 7'-.

4o the two folds being spaced apart to receive the opposite, edge, as will be hereinafter described.. At the ben'd ofthe folds a hole 8 is provided to receive a fastening device, as will be hereinafter described. j

The fastening device consistsof a Wire 9,at- .tached to the opposite edge of the pipe. As a convenient means for securing the joint this edge ofthe pipe is lapped over the Wire,

i as indicatedat 10.4 This lap'has anopening following is a full, clear, andexact descrip.

sheet-metal'fpipes, particularly sto`v'epipes;V

other will be practically impossible. The pipe l 11,.'througi`i which an outwardlyfextended 5b yloop.12, formed in the wire, extends, the-said loop being designed topass-.through Vthe hole 8'. It will be noted that the outer fold 7.and the lap 10 terminate somewhat above the bead 1 13, formed on the lower end ofthe pipe-joint, 55. which forms' a stop for the connecting-joint.

The ends of the wire 9 are also extended at 'both endsbeyond .the endsof the joints.

Irl the operation to set uplthe pipe-jointth'e Aedge having the' wire is to be ,passed through 6o the openedgebetween the spaced folds Gand 7 and`the loop 12passed through the hole 8. .y Then the loop is to be tprn'edover upon the outer surface of the fold'7,j as indicatedin liigs, 4, and `5.- As' the lappedportion'l() lits snugly between the fold members,a smoketight joint is madewithput hammering the edge of the fold 7 down upon the pipe. When one joint is engaged with another, as indi- .cated in Eig. 3', theadjacentends of the wire Qare robe twisted together.. This Will prevent any accidental .displacement of one joint relatively to another. ,a

Havingy thus i described myinvention, I claim as new and desire 'to secure by Letters' 75 l. Asbest-metal pipe having a double fold upon itself at one edge,-the fold members be! ing spaced apart forming an opening at the edge, a hole being provided at the bend ofthe folded members, and awire on the opposite edge adapted to pass between the fold members and having -a portion for -pvassingI through said hole, substantially as specified. 2. A `sheet-metal pipe having a double `fold 85 .upon itself at 4oneadge, the foldmernbers beingy spaced apart forming an openingat the edge, a hole being provided at the bend of the folded members, .a wire at the opposite edge, said 'opposite edge being lapped over the wire, and an outwardlysextended loop formed in said wirefor passing through said hole, substantially as specified. r 3. 'A 4sheet-metal pipe having a double fold upon itself at'one edge, the fold members be-l ingspaced 'apart forming an opening at thel edge, a hole being provided at the bend of "the folded members, and. a wiresecured inl a lapped portion of the oppositeedge and havname to this specifoation in the presence of inge looped portion'for passing through seid' 'gwo subserbngwtnessos. hole,l the ends of the wire being extended beyoud the pipe length whereby the ends of FRANK L' FILSON' 5 Wires of connected llengtlw or joints may be Witnesses:

twisted together, substantially as specified. Y STERLING J. MILLER, In `testimony whereof I have signed my EDWARD L. FILsoN.' 

